Reading
The Book Trust has lots of ideas for books children of all ages might enjoy. Their hometime page (link below) has lots of videos and activities that children can do at home.
Registration is not required.
Authorfy.com has great videos from authors that children can watch, extracts from their books to read and activities to do.
Registration is required.
Audible are making all children's books free to listen to whilst schools are closed.
Registration is not required.
Classroom Secrets has lots of reading and phonics activities for children of all ages.
Registration required.